Red miniature rose plant named &#39;Jentara&#39;

ABSTRACT

A new white miniature rose plant which has abundant non-fading flowers and good keepability. The variety successfully propagates from softwood cuttings and is suitable for year round production in commercial glasshouses. The new and distinct variety has shown to be uniform and stable in the resulting generations from such asexual propagation.

BACKGROUND OF THE INVENTION

[0001] The present invention constitutes a new and distinct variety of miniature rose plant which was developed by artificially pollinating an unnamed seedling with an unnamed seedling.

[0002] The two parents were crossed in the summer of 1996 and the resulting seed was sown in autum, 1996 in a controlled glasshouse environment. The new variety is named ‘Jentara’ The objective of the hybridization of this rose variety for commercial greenhouse culture was to create a new and distinct variety with:

[0003] 1. Uniform and abundant flowers with excellent keepability;

[0004] 2. Attractive long lasting foliage and compact growth,

[0005] 3. Year round flowering under glasshouse conditions;

[0006] 4. Suitability for production from softwood cuttings in pots; and

[0007] 5. Durable flowers and foliage which make the variety suitable for distribution in the floral industry.

[0008] This combination of qualities was not present in previously available commercial cultivars of this type and distinguish ‘Jeantara’ from all other varieties of which we are aware.

[0009] The seeds from hybridization were planted in a controlled environment and evaluations were conducted on the resulting plants. ‘Jentara’ was selected by Svend Jensen in He's development program in Bjert, Denmark, in june 1997..

SUMMARY OF THE INVENTION

[0010] ‘Jentara’ is tested at DANROSE nursery,Dk-6051 Bjert, Denmark in 1998, and at Por La Mar Nursery, 600 S. Patterson, Santa Barbara, Calif. 93160, USA in 1999. Have here proven to be stabile by propagation with cuttings in several generations. ‘Jentara’ is a low and compact miniature rose with medium vigor. The shelflife has been tested to be good.

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0011] The accompanying color illustrations show as true as is reasonably to obtain in color photographs of this type, the typical characteristics of the buds, flowers, leaves, stems, and a plant of ‘Jentara’. Specifically illustrated in sheet 1:

[0012] 1. Flowering stem w. leaves

[0013] 2. Leaves and stem detached.

[0014] Sheet 2:

[0015] 3. Flower bud, partially opened bud, and to open bloom;

[0016] 4. Sepals, pistils & stamens;

[0017] 5. Petals detached;

[0018] Sheet 3:

[0019] 6. Specifically illustrated an entire blooming plant in a 10.5 cm pot.

DETAILED DESCRIPTION OF THE VARIETY

[0020] The following is a detailed description of ‘Jentara’, as observed in its growth in glasshouses inBjert, Denmark, and Glass-/polyhouses in Santa Barbara Calif. The cultivation at both location was conducted with 20 to 25 dgC Temperature, and 250 Klux light sum per day, and minimum 4 hours night. Descriptions were made from plants treated with growth regulators normally used in the greenhouse production process. The growth regulator Paclobutrazol was applied at 15-30 ppm weekly beginning at a plant age of 9 weeks. The peduncle lengths mentioned may actually be sorter and the foliage color several shades darker than on untreated specimens. Color references are made using The Royal Horticultural Society (London, England) Colour Chart.

[0021] Classification:

[0022] Botanical: Rosa hybrida.

[0023] Commercial: Miniature. Characteristic Application variety Crop time 12 weeks Appropriate container used 10 cm Plant shape Rounded Growth habit Upright Plant height 28 cm Plant diameter or area of spread 20 cm Growth rate/vigor Rapid/moderate Branching habit Very freely Pinching required? Yes Numbers of lateral branches 3 to 4 Lateral branch length 16.5 cm Lateral branch diameter 2 mm Internodie length 10-20 mm Stem color RHS, Green group, NO.: 137A Stem pubescence None Other Plant/stem characteristics None Leaf arrangement Alternate Compound or single? Compound Quantity of leaves per lateral branch 6 to 7 Quantity of leaflets per leaf 3 to 5 Leaf(leaflet) shape Ovate Leaf (leaflet) Tip Accuminate Leaf (leaflet) base Obtuse Leaf/leaflet length 50 to 75 mm/20 to 30 mm Leaf/leaflet width 38 to 45 mm/8 to 20 mm Leaf (leaflet) texture Smooth Leaf pubescence? Which side? None Leaf(leaflet) margin. Serrate Venation pattern Pinnate Leaf color, young, upper side RHS, Yellow-Green group, No.: 146B with reddish edge. Leaf color, young, under side RHS, Yellow-Green group, No.: 146B, with reddish edge. Leaf color, mature, upper side RHS, Green group, No.: 137A.. Leaf color, mature, under side RHS, Green group, No.: 138B. Vein color, upper side RHS, Green group, No.: 137A. Vein color, under side RHS, Green group, No.: 137D. Petiole length 15 to 25 mm Petiole diameter 1 mm Petiole color Upper side: RHS, Green group, No.: 137A, W. reddish tone Under side: RHS, Green group, No.: 137A, W. reddish tone Durability of foliage to stresses Stiff Stipules Yes. 6 mm, RHS, Yellow-Green group, No.: 147A, w. reddish tone Thorns None Other foliage characteristics None Flower arrangement Single to corymb Flower form Filled Flowering habit Recurrent Quantity of flowers per lateral stem 1 to 3 Quantity of flowers and buds 12 to 14 per plant Natural flowering season Year round Time to flower or response time 35 days as avr. For the year. Rate of flower opening Moderate Frangrance None Flower aspect Upon opening ovoid. Complete open: flat to rounded. Petals bending backward Flower shape Flat to rounded Flower diameter Up to 40 to 50 mm Flower depth Up to 15-20 mm Flower longevity on plant 18 days Flower longevity as a cut flower Unknown Persistent or self cleaning? Persist on the plant Petal appearance Dull to bright Petal texture Smooth Petal arrangement 5 per circle Petal number 75 Petal fused? No Petal shape Orbicular Petal margin Entire Petal tip Cuspidate Petal length 12 to 28 mm Petal width 8 to 25 mm Petal color, when opening, upper side RHS, White group, No.: 155C, w. green center strip Petal color, when opening, under side RHS, White group, No.: 155C, w. green center strip Petal color, fully opened RHS, White group, No.: 155C, w. green center strip Petal color, fading to RHS, White group, No.: 155C, w. green center strip Petaloids? Yes Petaloid appearance Dull Petaloid arrangement Spread number of petaloids 5 Petaloid shape Linear Petaloid margin Entire Petaloid length 4 to 5 mm Petaloid width 2 to 3 mm Petaloid color, immature RHS, White group, No.: 155C. Petaloid color, mature RHS, White group, No.: 155C. Sepal appearance Semi glossy Sepal texture Stiff and hairy Sepal arrangement one circle w. 5 Number of sepals 5 Sepal shape Linear Sepal margin Entire with a few leaflets appendix Sepal Tip Acuminate Sepal color, upper side RHS, Green group, No.: 138A Sepal color, under side RHS, Green group, No.: 137C Calyx shape Funnel shaped Calyx length 6-7 mm Calyx diameter 5-6 mm Peduncle length Apr. 50 mm Peduncle angle Straight Peduncle strength Stiff Peduncle color RHS, Green group, No.: 137C, w. tiny reddish prickles. Flower bud length 20-25 mm Flower bud diameter 12-15 mm Flower bud shape Urceolate Rate of opening Medium Flower bud color RHS, White group, No.: 155C Stamen number 10 Anther shape Elliptical to ovate Anther size 2 to 3 mm Anther color RHS, Yellow group, No.: 13B. Amount of pollen Little Pollen color RHS, Yellow group, No.: 13B Pistil number 30 Pistil length 4-5 mm Stigma shape Rounded Stigma color RHS, White group, No.: 155C. Style length 3-4 mm Style color RHS, White group, No.: 155C, w. heavy tone of Red-purple group, No.: 67A Ovary color RHS, White group, No.: 155C. Other flower characteristics None Seed development? Unknown Seed length Unknown Seed diameter Unknown Seed color Unknown Disease resistance Unknown Disease susceptibility Susceptible to Powdery mildew 

1. A new and distinct variety of rose plant of the miniature class, substantially as herein illustrated and described, as a distinct and novel rose variety due to its abundant flowers with excellent keepability, attractive long lasting foliage and compact growth, year round flowering under glasshouse conditions, suitability for production from softwood cuttings in pots, and durable flowers and foliage which make the variety suitable for distribution in the floral industry. 